Trailbuilder bowl for wheeled vehicles



July 24, '1934. 1 s, STEWART 1,967,379

TRAILBUILDER BOWL FOR WHEELED VEHIQLES Filed 001'.. 20. 1935 PatentedJuly 24, 1934 PATENT OFFICE TBAILBUILDER BOWL FOR WHEELED VEHI CLES

James 8. Stewart, Sidney, Ohio. asllgnor to The Slusser-Mclean ScraperCompany,

Sidney,

Chio, a corporation of Ohio Application October 20, 1933, Serial No.694,508

6 Claims.

This invention relates to new and useful improvements in trailbuilderbowls for wheeled vehicles.

One of the principal objects of my invention l is to provide forattachment to a wheeled vehicle such as a tractor, an extremely flexibletrailbuilder bowl that may be set at desired angular positions in ahorizontal or a vertical plane without strain. To this end my inventioncontemplates the provision of means for pivoting the bowl to a hornmounting in such a manner that it may be easily moved about thatmounting while the latter is in a stationary position.

Another object of my invention is the provision of means for firmlyholding the bowl in any of its adjusted angular positions.

Other important and incidental objects will be brought out in thefollowing specification and particularly set forth in the subjoinedclaims.

In the accompanying drawing illustrating my invention. Figure 1 is apartial side view of a conventional tractor to which my trailbuilderbowl is attached. Figure 2 is a vertical sectional view taken throughthe horn mounting for the bowl on the line 2-2 of Figure 1. Figure 3 isa top plan view of the bowl and its horn mounting, showing in dottedlines one extreme horizontal angular position of the bowl. Figure 4 is aperspective view of one of the struts for holding the bowl in its normalposition illustrated in full lines in Figure 3. Figure 5 is a sectionalview taken on the line 5-5 35 of Figure 2. showing the means for guidingthe vertical movement of one end of the bowl. And Figure 6 is a detailsectional view of the lower edge of the bowl plate, showing how theblade is secured thereto.

Referring to the accompanying drawing for a detailed description of myinvention, the numeral 1 designates the front end of a conventionalbulldozer carrying pivoted side frames 2, 2. Secured to the free frontends of these frames by means of plates 3 and throughbolts 4, are theenlarged ends 5, 5 of a horn 6.

Attached to the top surface of each end 5 of the horn 6, is a bracketplate 'l carrying a bracket arm 8. Secured by a ball and socket 50 joint9 to each bracket plate is an elevator bar 10 which, at its upper end,is secured by a similar joint 11 to the outer free end of a lever arm 12attached to a front cross shaft 13. This shaft is adapted to be rotatedby a lever arm 14 pivotally attached at its free end to the outer end ofa piston rod 15. The latter may be projected or retracted by a fluidcylinder 16 to which fluid is supplied through hose ccnnectons 17 and 18from a conventional fluid pump (not shown), to raise or lower the horn 6carrying a flexible bowl 19 now to be described.

'Ihe bowl 19 consists of a main concave steel plate 20 having arearwardly projecting top 21 and a rearwardly projecting bottom 22welded' thereto. Welded, or otherwise secured, to the middle part of theinner surface of the plate 20 is a metal box member 23. Pivotallysecured to the middle portion of this box member 23, by a short stud 24,is a channel-shaped cross arm 25. Welded or otherwise secured to the topflange of the cross arm 25 immediately behind the box member 23, arebracket webs 26,

26, below which there are secured to the lower flange of the cross arm,similar bracket webs 27, 27. Both pairs of these webs are welded to, andact as reinforcing members for, a backing plate 28 that in turn isWelded to the front face of the channel cross arm.

The stud 24 passes through a central hole in the plate 28, the latterbeing formed above and below the cross arm 25 with upper and lowerarcuate slots 29 and 30 respectively. Studs 31.

31 anchored in holes in the face of the box 23, project rearwardlythrough these arcuate slots,

to assist in supporting the bowl, as well as to limit its travel whentilted in either direction about the stud 24. Nuts 32 are adapted to beapplied to the inner threaded ends of the studs 31, 31 to assist infirmly holding the bowl in an adjusted vertical position against theforces which act against it when it is moved through the ground.

The channel cross arm 25 is pivotally secured to the apex end 33 of thehorn 6 by a vertical stud 34 which projects through registering holes 95in the top and bottom flanges of the cross arm, and in the top andbottom walls of the cross arm between them. (See Figures l and 2.)

For the purpose of bracing each side of the bowl 19 in any of itsadjusted vertical positions. 100 I have provided the following preferredmeans. Welded or otherwise secured to the rear surface of the concavebowl plate 20, one near each end thereof, are flanged supporting members35, 35 which extend fromthe top to the bottom 105 portions of the plate.Welded or otherwise at tached to the rear surface vof each supportingmember 35 are concentric arcuate rails 36, 36 having inwardly projectingflanges that are spaced to form together a slot to receive a T shoe 37'secured to the front face of the channel cross arm 25. These shoes 37,37, which are adapted to slide through the T slots formed by each pairof rails 35, 35 carried by the bowl 5 plate 20, assist in bracing eachside of the latter against the forces which act upon it during an earthmoving operation.

'I'he side wall 38 of each supporting member projects rearwardly beyondthe vertical plane of the front face of the channel member 25, beingformed with a vertical row of apertures 39 to receive the end of alocking pin 40. The locking pins 40, 40, which are adapted to enter theapertures 39 in the side walls 38, 38 of the supporting members 35, 35,to assist in firmly holding the bowl 19 in an adjusted verticalposition, are securedl to the ends of the channel cross arm 25 in thefollowing manner.

Welded or otherwise attached to the top ange of the cross arm 25, nearend thereof, is an upstanding plate 41 formed .with a hole to receive arespective locking pin 40. .Secured between each plate 41 and theprojecting end of a curved shoe 42, welded to each end of the channelcross member 25, is a sleeve 43 through which the free end of thelocking pin is adapted to be forced into a selected aperture 39 in theside wall extension 38 of the supporting member 35. The locking pins 40,40 have bent inner ends so that they may be easily grasped for thepurpose of forcing them through the sleeves into the apertures that maybe at the time in front of the registering holes in the shoes 42, tohold the bowl in an adjusted vertical position, or for the purpose ofreadily withdrawing the pins from these apertures so that the bowl plate20 may be swung to another desired vertical position.

The means for holding the bowl 19 in its various angular positions in ahorizontal plane will now be described. 'Ihe top and bottom i'ianges ofthe channel cross arm 25, near each end thereof, are provided withoppositely disposed holes 44, 44 to receive a connecting pin 44.

Each pin 44 is also adapted to be forced through oppositely disposedholes 45, 45 in triangular anges 46, 46 respectively, in a strut 47.'Ihere are two of these struts, one for each side of the machine andeach comprising a flat steel member having the anges 46, 46 formed atone end and triangular flanges 48, 48 near its other end, which iscurved slightly outward beyond them. The flanges 48, 48 which are theinner ones, contain oppositely disposed holes 49, 49 respectively toreceive a connecting pin 50.

Each strut 47 is adapted to be connected to its respective end of thechannel cross arm 25, by bringing it to a position wherein its flanges46.

48 will straddle the cross arm, and its front end will solidly abut therear edge of the shoe 42 to take the strain from the connecting pin 44',which is forced downwardly through the registering holes 44 and 45. Onthe side of each rear end 5 of the horn 6, there is welded a verticalthrust member 51 against which the rear curved end 51 of-a respectivestrut is adapted to abut to take the strain from the pin 50 which passesthrough the holes 49, 49 in the flanges 48, 48 that straddle the hornend, and through. registering holes in the walls of the latter.

When both struts are connected between the channel cross arm 25 and thehorn ends 5, 5, as illustrated by the full lines in Figure 3, and asdescribed above, the bowl 19 will be rmly held in a position at rightangles to the longitudinal axis of the machine.

By withdrawing the connecting pins 44* and 50 the struts 47, 47 may beremoved to permit the bowlto be swung either to the right or to theleft, for connection as follows to the horn Vin either one of itsextreme horizontal angular positions. When the bowl is moved to theleft, for example, as indicated by its dotted line position in Figure 3,the flanges of the channel member 25 will straddle the left horn end 5to permit the left connecting pin 50 to be passed through the channelmember holes 44, 44 and the holes in the horn, with which they have beenbrought into registry. The left connecting pin 50 thus serves to holdthe bowl in its extreme left horizontal position. By withdrawing the pin50, the bowl may be swung around to its extreme right position andconnected to the right horn end by passing the right pin 44* through theregistering holes in the right end of the channel arm 25 and. the righthorn end. When th bowl is in the4 dottod line position, a strut similarto the strut 47, but longer than the latter, is employed to brace theopposite end of the bowl as shown in dotted lines in Figure 3.

Welded or otherwise secured to the box member 23 and the supportingmember 35, are triangular ribs 52 which are also welded to the lowerinner face of the bowl plate 20 to stiften the latter. The lower edge ofthe bowl plate 20 is formed with a series of laterally spaced holes toreceive bolts 53 by which a reversible blade 54 having opposite bevelededges is secured to said bowl plate. (See Figures 1, 2 and 6.)

It will be seen from the foregoing description that I have provided foran earth moving device. a bowl which is easily adjustable in a verticaland a horizontal plane, without strain, to a desired angular position,with means for flrmly holding the bowl in that position when it is movedthrough the ground.

The extreme flexibility of the bowl, together with its-rigidity in anadjusted position, make it one which is eminently adapted for bulldozersand other earth moving devices where frequent blade adjustments arenecessary to accommodate it todiiferent ground conditions and underwhich it is necessary to hold the bowl solidly during an earth movingoperation.

I do not wish to be limited to the details of construction andarrangement herein shown and described and any changes or alterationsmay be made therein within the scope of the subjoined claims.

Having described my invention, I claim:

l. A material moving device adapted for attachment to a vehicle,consisting of a horn carried by said vehicle, a bowl, a channel memberto whose vertical face the bowl is pivoted for' adjustment in a verticalplane, said channel member straddling the apex end of said horn, and avertical pivot connecting the channel member to the horn for ahorizontal movement about the latter.

2. A material moving device adapted for attachment to a vehicle,consisting of a horn carried by said vehicle, a bowl plate, a horizontalmember to which said plate is pivoted at its middle portion, means forconnecting said member to the horn, and a sliding guiding connectionbetween the outer portions of said member and the bowl plate to assistin rmly holding the latter in an adjusted position when moved' throughthe l ground.

3.l A material moving device adapted for attachment to a vehicle,consisting of a horn carried byvsaid vehicle, a bowl plate. a horizontalmember to which said plate vis pivoted at its middle portion, means forconnecting said member tothe horn, a sliding guiding connection betweenthe outer portions of said member andthel bowl plate, and locking meansassociated with each guiding connection to assist in ilrinly holding thebowl plate in an adjusted position when moved through the ground.

4. A material moving device adapted for attachment to a vehicle,consisting oi' a horn carried by said vehicle, a bowl plate, ahorizontal member to which said plate is pivoted at its middle portion,means for connecting said member to the horn, members secured to therear face of the bowl plate, to form an arcuate T slot near each endthereof, and shoes on the pivoted member for travel through said slotsto assist in holding the bowl plate in an adjusted position when drawnthrough the ground.

5. A material moving device adapted for attachment to a vehicle,consisting of a horn carried by said vehicle, a bowl plate, a horizontalmember to whch said plate is pivoted at its middle portion, means forconnecting said member to the horn, a pair .of arcuate memberssecured tothe rear face of the bowl plate, near each end thereof, to form twoarcuate T slots, shoes secured to the pivoted member for travel in saidT slots, a ilange having vertically spaced holes, secured to each sideof the plate opposite a respective arcuate T slot, and a locking pincarried by each side of the pivoted member over a. respective slot, forentrance into a selected hole in the adjacent side ilange.

6. An earth moving device adapted for at'- tachement to a wheeledvehicle, consisting of a triangular horn carried by the front part ofsaid vehicle, a bowl pivotally secured at its middle portion to the apexend of the horn, a strut member adapted to be placed between each end ofthe bowl and the horn, and pins for removably securing the ends of thestruts to the bowl and the horn, the struts adapted to be removed by thewithdrawal of said pins, after which the bowl is adapted to be swungeither to the right or to the left for connection at one end by a rearpin to the horn.

JAMES S. STEWART.

ias'

